Car-truck.



No. 649,l00. Patented-May 8, I900.

S. E. CLABKSON.

GAB TRUCK.

(Application filed Sept. 22, 1899.)

2 Sheeia--Shaet (No Modal.)

INVENTOI? BY WSEHQWQ \k ATTORNEY WITNESSES: 71/. a 06%;. 971 414 No. 649,!00. Patented May 8, I900. S. E. CLARKSON.

c n TRUCK. (Application filed Sept. 22, 1899.) (No Model.) 2 Sheets-Sheet 2.

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1 serene SAMUEL CLARKSON, on JOHNSTOWN, PENNSYLVANIA, nssrcnon 'ro THE LORAIN STEEL COMPANY, OFYPENNSYLVANIA' CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 649,100, dated lliay 8, 1960.

Application filed September 22, 1899. Serial No. 731,292. (No model.) I

To all whom it may concern:

Be it known that I, SAMUEL E. OLARKsoN, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new.

' the. bolster to the journal-boxes through a system of springs supporting the bolster and supported by the journal-boxes. By relieving in this manner the truck-frame from the load of the car I am able not only to dispense with the spring-planks or other parts heretofore used to mount the bolster-springs on the truck-frame, but I can reduce very materially the weight of the said frame and the cost of its construction, the main office of the frame of my improved truck being to maintain the parallelism of the axles and to receive the upthrusts due to uneven road'bed, low rail-joints, &o. I am also able to materially shorten the wheel-base and to provide a truck which has suflicient clearance at the The invention also comprises helical springs seated on the frame below the journal-boxes for the purpose of receiving and neutralizing the upward movements of the truck-frame.

The invention also consists in'the novel construction and combination of parts hereinafter described, and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 is a plan view of a car-truck embodying my invention. Fig. 2 is a side View of the same, and Fig. 3 is a transverse section on the lineX X of Fig. 2.

The letter A designates the side frames of the truck, which I prefer to constructreach of two parallel edgewise-disposed plates spaced from and connected to each other by means of spacing-pieces A and bolts or rivets extending therethrough. Each of said plates has a continuous upper member a, extending over the journal-boxes, and a lower member a, broken by upwardly-extending openings o for the journal-boxes, the said upper and lower members being integrally connected by the vjournal-box-guiding portions 0/ the intermediate portions a forming guides for the ends of the bolster and the oblique end or truss portions a A represents end connections for the two side frames A, consisting, preferably, of angle-bars securely riveted to both plates of each side portion.

B designates the bolster, which is upwardly arched at its central portion with depressed end portions which extend through the openings in the side frames formed by the guides at.

' In order to prevent forward and rear rocking motion of the bolster by reason of the a I low end portions, I secure thereto a straight top member B, whose ends project over the side frames A and are received in upwardlyextending guides B which are secured between the plates of the sidefraincs.

(J designates the semi-elliptic side or bolster-supporing springs upon whose central portions the low bolster ends are rested and to which they are tied by straps or U-bolts 0. These springs are placed between the plates of the side frames, and their ends rest upon the lower T-heads of bolts D, by means of which they are link-connected and suspended to the inner end portions ofinverted semielliptics E E, which rest centrally on thejournal-boxes F. The outer ends of the semielliptics E E are connected to the-portions a of the side frames by means of bolts G, hav-' ing T-heads at their upper ends which are engaged by pivot pins or bolts h.

H designates spreaders, which are removably secured across the lower ends of the journal-box guides and which are formed with depressed seats H to receive the lower 5 ends of helical springs I, seated between the spreaders and the under sides of the journalboxes.

The weight of the load is received upon the semi-elliptics C, which act as equalizers in transmitting the load equally to the two journal-box semi-elliptics E E, the upward pull on the side.frames through the outer ends of the journal-box semi-elliptics being distributed upon the helical springs I underneath the journal-boxes. It will be seen, therefore, that instead of the side frames of the truck performing the oiiice of beams loaded at the cen-. ter they are relieved of the load, except as it is distributed through their end portions to the helical springs I. These springs I may, however, be omitted.

The springs, it will be noted, are largely concealed by the side frames, giving the truck a heater appearance in side view. To remove the wheels and axles, the side frames may be jacked up at their central portions and the spreaders H removed. The. wheels and axles, with the boxes, can then be readily dropped out of the frame.

I do not desire to limit myself to the various details of construction which I have herein shown and described, as these may obviously be changed Without departing from the essential features of my invention as pointed out in the appended claims.

Having thus described my invention, what I claim, and desire to protect by Letters Patent, is

' 1. In a car truck, the combination with a truck-frame and a bolster, of springs supporting said bolster, and other springs carried by the journal-boxes and supporting the firstnamed springs independently of the truckframe.

5 2. In a car-truck, the combination with the frame, the wheels and axles, the journalboxes, and a truck-bolstenfof springs carried by the journal-boxes and equalizing members supported by said springs and supporting the bolster independently of the truck-frame.

' 3. In a car-truck, the combination with the .frame", the wheels and axles, the journalboxes having guides in the said frame, and a truck-bolster, of springs'carried on the jourrial-boxes, and bolster-springs suspended by the journal-box springs and carrying the bolster.

4'. In a car-truck, the combination with the frame, the wheels and axles, and the journalboxes having guides in the frame, of inverted semi-elliptic sp'rings carried on the jou rnalboxes and 'connectedat their outer ends to the frame, semi-elliptic springs between the wheels suspended from the inner ends of the journal-box semi-ellip'tics, and a bolster supported by the suspended semi-elliptics.

5. In acar-truck, the combination with-the frame, the running-gear, and the bolster, of the inverted semi-elliptic springs carried on theaxle-boxes, the links or bolts connecting the outer ends of said frame with the end por tions of the truck-frames, the side semi-elliptics between the wheels carrying the bolster at their central portions, and the bolts or links which suspend the side semi-elliptics from the inner ends of the journal-box semi-elliptics.

6. Ina car-truck, the combination'of the semi-elliptic springs carried by the axle-boxes and connected at their outer ends to the end portions of the frame, the bolster carrying ,semi-elliptics suspended from the inner ends of the journahbox semi-elliptics and springs interposed between the frame and the under sides of the journal-boxes.

7. In a car-truck, the combination with the frame having thejournal-box guides and'the spreaders closing the bottoms of the said guides, of the inverted semi-elliptic springs carried on the journal-boxes, and linked to the frame at their outer ends, the helical springs seated between the said spreaders and the journal-boxes, and the bolster carrying semi-ellipticslink-supported from the inner ends of the journal-box semi-elliptics.

8. In a car-truck, the side frames composed of two parallel edgewise-disposed plates, each of which has upper and lower members into; grally connected by johrnal-box and bolster guides and also by end trusses, substantially as described.

9.; In a car-truck, the combination with a bolster having an arched body member and a straight top member extending over the side frames, of the side frames having guide-openin gs for the depressed ends of the body member, and upwardly-projecting guides for the end portions of the top member.-

10. In a car-truck, the combination with'the side frames composed each of two parallel sep arated members, and provided with journalno box guides, of the inverted semielliptic springs carried on the journal-boxes and the bolster carrying semi-elli ptic springs suspended from the inner ends of the journal-box springs, all said springs being arranged in the spaces between the members of the side frames.

-1 1. In acar-truek, i he combinatiomwiththe frame, the running-gear, the springs carried on the journal-boxes, the semi-elliptic springs suspended from the journal-box springs, and the arched bolster having its ends bearing on said semi elliptic springs, and a straight top member engaging u pwardly-projecting gni d es on the frame.

In testimony whereof I have afiixed my signature in presence of two witnesses.

SAMUEL E. CLARKSON.

\Vitnesses:

MYRTLE SHARPE, H. W. SMITH. 

